过去不是为了生活其中；它是一个结论的源泉，我们从中汲取以行动。
The past is not for living in; it is a well of conclusions from which we draw in order to act.
Collaboration across the supply chain is key to driving real change.
We can’t ignore the economic role of coal, but we also can’t ignore its environmental impact.
永远不要停止问：“我们怎样才能做得更好？”
每一个挑战都是学习和改进的机会。